Shaking-grate.



W. E. COLE.

SHAKING GRATE. APPLICATION rum) APR. 6, 1906. RENEWED APR. 24, 1908.

V 900,057, Patented Sept. 29, 1908.

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W. B. COLE.

SHAKING GRATE. APPLIOATIOK FILED APR. 6, 1906. RENEWED APR. 24, 1908.

. 900 051 Patented Sept. 29, 1908.

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, 1 WILLIAM coLE, OF NonFoLxvmeINIA.

jispecificationtoflLetters I E atent.

. r tented Sept. 29, 1908.

Application filed April 1906,? Serial No. 310,357. Renewed April 24,1908. Serial No. 429,056.

To all whom it may concernr e Be it known that I, WILLIA E. CoLE, acitizen of theUnited States, residing'at Norfolk, in thecounty of.Norfolkand State of Virginia, have invented certainnew and usefulImprovements in Shalrin g -Gratesyancl I do hereby declare the followingtobea full, clear, and exact description ofthe invention,

" such as willenable others skilled in the art to V apertures 17proportioned to accommodate" the web 18 of the grate bars, which saidweb" which it appertains to make and use 3 the same. 'l

This invention relates to sh king grates for stoves, furnaces and thelike, and'has for its object to provide a device of the classembodyingnew and improved features of convenience, economy, reliabilityandefficiency.

A further object of thelinvention is to provide ball bearings of rovedform for sup;- porting the longitudina y reciprocating grate bars. -Withthese and other objects in view,the

invention comprises certain novel construjc tions, combinations, andarrangements of parts, as will be hereinafter fully describedandclaimed. l

Figure-1 is a longitudinalsectional view through a furnace provided withmy proved grate. Fig. 2 is across sectional view on'line 33 of Fig. 1.Figs. 3, 4, and 5 are detail views illustratingthe roller supports forthegrate-bars. V i j In its preferred embo 'ent.,the improved shakinggrate forming the subject-matter of this application, comprises a framewall orfire pot 10, referably rectangular in form and provide atopposite [ends with'trans versely disposed spaced bearing bars 11rigidlysecured thereto adjacent to or in 0011-.- tact with the end wallsof the said frame or fire pot.- Interposed between the spaced bearingbars 11'are supporting uprights 712, defining spaces for theaccommodation of the. ends of. the reciprocating grate bars {andforming, at their upper ends, means for sup porting the end portionsofithe furn'ace, as

the perforate plate 13 or .theledge 14. a

. Between the spaced bearing bars ll an dintermediate the supportinguprights 12 are secured carriers 15 upon and between which are disposedballs 16. T The inner spaced bearing bars 11 are provided with notchesor is provided at itsoppositeends with grooves 19, proportioned andpositionedto rest upon the balls 16, Upon and rigidly secured to orshafts 24jand 25 in any approved manner as by their respective trunnions26 and 27,

being. journaled in bearings 28 and 29, formed in the sidewalls of theash pan or pit. The rock shafts 24 and 25 are respectively provided withupstanding lugs 30 and 31 spaced on the said shafts in position toengage intervals 32 and 33 defined between downwardly extending lugs 3434 and 35 35 upon alternate grate bars, so that the lugs ofthe-rockshaft 24are inoperative engagement with alternate grate bars, while thelugs of rock shaft 25' arein similar engagement with the grate barsintermediate. Upon the lower side of the rock shafts 24 and 25 arerespectively formed arms 36 and 37;, extending downwardly into the ashpit,

and .pivotally connected respectively with links 38 and 39, extendingoutwardly through the end of the walls 10 of the ash pit. Upon the outersurface of the. ash pit wall is pivoted a lever 40 of any approved andconvenient form; and 1n any conven ent manner as between the ears 41,the said lever being provided with a normally, vertically dispose crosshead 42, to the extremities of which are pivotally secured the links 38and 39.

It'will be understood that thedevice here shown and described maybeapplied to any ordinary and usual form of stove and furna'ce, engine,locomotive and the like, and that the grate bars20 may be plain u ontheir upper surfaces, as shown, or curved in anydesiredand a provedmanner. It will also be understood that the lever 40 may be of anydesired and a proved length and either straight or curve to bepositioned for convenient operation by the operator in charges Inoperation, the oscillation of the lever 40 will oscillate the cross head42 and reciproj cate the links38 and 39. The links 38 and 39 beingsecured, as shown, to the opposite ends of the cross head 42, will begiven a reciprocatory movement in opposite directions. The links 38 and39 being pivotally secured to the arms 36 and 37, which are rigidlyconnected with the rock shafts 24 and 25 will be simultaneously actuatedin opposite directions, and the rock shafts consequently rotatably movedin opposite directions. The rotary movement of the rock shafts 24 and 25in opposite directions will move the lugs 30 and 31 upon theirrespective shafts simultaneously in opposite directions, and as the saidlugs 30 engage grate bars which are in alternation with those engaged bythe lug 31, it is obvious that the said grate bars will besimultaneously and alternately moved in op- 'posite directions.

The face of the grate 20 is of the usual tooth type as indicated by 21.The projections 21 on each side of the bar at the end do not supportfuel. The plate 13 supports the fuel. The projections 21 are spacedbetween the uprights 12 so as to guide and hold the grate bar in avertical position as it moves back and forth longitudinally. The notches17 in the bearing bar 11 engages and guides the web of the grate andholds it on top of the ball.

It will be noted that at the stoking end of the furnace the perforateplate 13 is provided as a fuel surface and to keep the fire off the endsof the movable grate-bars also, the perforations therein being of suchsize that any material, which passes through the said plate, is smallenough to pass through, between and among the carrying guides,supporting uprights and bearing balls.

The form of furnace herein shown is largely conventional, as it isobvious that the principle involved in moving the alternate grate barsin opposite directions may be satisfactorily applied to furnaces ofvarious forms and grate bars of any approved struraure.

While the manner of moving the alternate grate bars in oppositedirections by means of rock shafts provided with staggered engaging lugsis found to be a convenient, and is a preferred form, it is obvious thatthe alter nate grate bars may be operated in any ap )roved manner, andits application. is not limited to the specific form of actuating means.

hat I claim is 1. In combination with a shakinggrate, two bearing bars,each comprising spaced bars, a series of spaced uprights between saidbars, a perforated plate supported by said uprights, a series of balltracks located between said uprights and balls located thereon,grate-bars provided with fuel supporting surfaces and depending websresting on said balls, and means for moving alternate grate barslongitudinally in opposite directions.

2. In a shaking grate, two bearing bars each comprising spaced bars, aseries of spaced uprights located between said. bars, the inner one ofsaid bars being provided. with notches located between. the. uprights,ball tracks below said notches connecting the bars, a ball locatedthereon, grate bars provided with fuel supporting surfaces and,depending webs, said webs passing through the notches of the inner barsand resting on the balls, means for supporting the bearing bars, andmeans for moving alternate grate bars longitudinally in oppositedirections.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM E. COLE.

Witnesses:

L. L. MoRnILL, JOHN L. FLETCHER.

